Radio waves within the VHF range (e.g. VOR) travel as...
Domanda 88, Navigation - PPL(A) English - Private Pilot License (Aircraft)
| Sky wave and ground / surface wave. |
| Ground / surface wave. |
| Sky wave. |
| Space wave (quasi-optical). |
| Sky wave and ground / surface wave. |
| Ground / surface wave. |
| Sky wave. |
| Space wave (quasi-optical). |
